# EXHIBIT 10.2

# FIRST AMENDMENT TO FOURTH AMENDED AND
RESTATED CREDIT AGREEMENT

This
First Amendment to Fourth Amended and Restated Credit Agreement (this
Amendment) dated as of April 19, 2002, is by and among MAGNUM HUNTER
RESOURCES, INC., a Nevada corporation (the Borrower), each Bank (as
defined in the Credit Agreement referred to below), DEUTSCHE BANK TRUST COMPANY
AMERICAS(formerly named Bankers Trust Company), individually, as administrative agent
(in such capacity, together with its successors in such capacity, the
Administrative Agent), as collateral agent (in such capacity, together
with its successors in such capacity, the Collateral Agent), and as
letter of credit issuing bank (in such capacity, together with its successors in such
capacity, the Issuer), CIBC INC., individually and as
syndication agent (in such capacity together with its successors in such capacity, the
Syndication Agent), and BNP PARIBAS, a French bank acting
through its Houston Agency, individually and as documentation agent (in such capacity,
together with its successors in such capacity, the Documentation Agent)
and as co-arranger, CIBC WORLD MARKETS CORP., as co-arranger and DEUTSCHE BANK
SECURITIES INC.(formerly named Deutsche Banc Alex. Brown Inc.), as sole lead arranger
and sole bookrunner.

R E C I T A L S:

WHEREAS,
the Borrower, each Bank then a party, the Administrative Agent, the Collateral Agent, the
Syndication Agent, the Documentation Agent (collectively, the Agents),
and the Issuer have heretofore entered into that certain Fourth Amended and Restated
Credit Agreement dated as of March 15, 2002 (the Credit Agreement)
pursuant to which the Banks have agreed to make revolving credit loans available to the
Borrower under the terms and provisions stated therein; and

WHEREAS,
the Borrower has requested that the Credit Agreement be amended to allow Compass Bank
(Compass), Wells Fargo Bank Texas, NA (Wells Fargo),
U.S. Bank National Association (USBank), Comerica Bank-Texas
(Comerica), Washington Mutual Bank, FA (Washington
Mutual) and Hibernia National Bank (Hibernia) to become
Banks party to the Credit Agreement, as set forth herein; and

WHEREAS,
subject to the terms and conditions of this Amendment, the Banks (including Compass, Wells
Fargo, USBank, Comerica, Washington Mutual and Hibernia), the Agents and the Issuer are
willing to enter into this Amendment;

NOW,
THEREFORE, in consideration of the premises herein contained and other good and valuable
consideration, the receipt and sufficiency of which are hereby acknowledged, the parties
hereto agree as follows:

Section 1. Definitions.  Capitalized terms used in this Amendment,  to the extent not otherwise  defined herein,  shall have the
same meaning as in the Credit Agreement.

Section 2. Amendments to Credit
Agreement. The Credit Agreement is hereby amended by deleting the existing Schedule
III-B to the Credit Agreement and inserting in its place as the new Schedule III-B to the
Credit Agreement the text contained in Attachment 1 attached to this Amendment.

Section 3. Compass, Wells Fargo, USBank, Comerica, Washington Mutual and Hibernia as Banks.

|(a) | Upon the effectiveness of this Amendment and by its execution and delivery
          hereof, each of Compass, Wells Fargo, USBank, Comerica, Washington Mutual and
          Hibernia shall be deemed automatically to have become a party to the Credit
          Agreement, shall have all the rights and obligations of a Bank under
          the Credit Agreement and the other Loan Documents as if each were an original
          signatory thereto, and shall agree, and does hereby agree, to be bound by the
          terms and conditions set forth in the Credit Agreement and the other Loan
          Documents to the Banks are a party, in each case, as if each were an original
          signatory thereto.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(b) | Each of Compass, Wells Fargo, USBank, Comerica, Washington Mutual and Hibernia
          (i) confirms that it has received a copy of the Credit Agreement, together with
          copies of the financial statements referred to in Section 7.1.1 thereof and such
          other documents and information as it has deemed appropriate to make its own
          credit analysis and decision to enter into this Amendment and the Credit
          Agreement; (ii) agrees that it will, independently and without reliance upon any
          Agent, the Issuer, any Arranger or any other Bank and based on such documents
          and information as it shall deem appropriate at the time, continue to make its
          own credit decisions in taking or not taking action under the Credit Agreement;
          (iii) represents and warrants that its name set forth herein is its legal name;
          (iv) appoints and authorizes each Agent to take such action as agent on its
          behalf and to exercise such powers and discretion under the Loan Documents as
          are delegated to such Agent by the terms thereof, together with such powers and
          discretion as are reasonably incidental thereto; (vi) agrees that it will
          perform in accordance with their terms all of the obligations that by the terms
          of the Credit Agreement are required to be performed by it as a Bank; and (vii)
          attaches any U.S. Internal Revenue Service forms required under Section 4.6(b)
          of the Credit Agreement.
|--- | -----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(c) | Each of Compass, Wells Fargo, USBank, Comerica, Washington Mutual and Hibernia
          hereby advises each other party hereto that its respective address for notices,
          its respective Domestic Lending Office and its respective LIBOR Office shall be
          as set forth below its name on Attachment 2 hereto.
|--- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Section 4. Confirmation of
Borrowing Base. Each of the parties hereto acknowledges and agrees that, effective as
of March 26, 2002, the Borrowing Base was increased pursuant to the provisions of Section
2.8.3(ii) from $275,000,000 to $300,000,000, which increased Borrowing Base shall remain
in effect until the Borrowing Base shall be redetermined in accordance with Section 2.8 of
the Credit Agreement. Each of the parties hereto further acknowledges and agrees that the
foregoing increase in the Borrowing Base shall not constitute a special optional
redetermination of the Borrowing Base pursuant to Section 2.8.3(i) of the Credit
Agreement.

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Section 5. Conditions
Precedent. The effectiveness of this Amendment is subject to the satisfaction of the
following conditions precedent:

|(a) | Executed Amendment. The Administrative Agent shall have received a
          counterpart of this Amendment duly executed by the Borrower, the Agents, the
          Issuer and all of the Banks, and duly acknowledged by each of the Guarantors.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(b) | Replacement Notes. The Borrower shall deliver to the Administrative Agent
          on behalf of each Bank listed on Attachment 1 hereto a promissory note dated the
          Effective Date and payable to each such Bank in a maximum principal amount equal
          to such Banks Percentage (as shown on Attachment 1 hereto) of Five Hundred
          Million Dollars, which Note shall be a renewal and replacement of, and shall be
          given in substitution and exchange for, but not in payment of, those Notes held
          by each Existing Bank (as defined below) prior to the effectiveness of this
          Amendment.
|--- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

|(c) | Other Conditions. The Borrower shall have confirmed and acknowledged to
          the Agents, the Issuer and the Banks, and by its execution and delivery of this
          Amendment the Borrower does hereby confirm and acknowledge to the Administrative
          Agent and the Banks, that (i) the execution, delivery and performance of this
          Amendment has been duly authorized by all requisite corporate action on the part
          of the Borrower; (ii) the Credit Agreement and each other Loan Document to which
          it is a party constitute valid and legally binding agreements enforceable
          against the Borrower in accordance with their respective terms, except as such
          enforceability may be limited by bankruptcy, insolvency, reorganization,
          moratorium, fraudulent transfer or other similar laws relating to or affecting
          the enforcement of creditors rights generally and by general principles of
          equity; (iii) the representations and warranties by the Borrower contained in
          the Credit Agreement and in the other Loan Documents are true and correct on and
          as of the date hereof in all material respects as though made as of the date
          hereof; and (iv) no Default or Event of Default exists under the Credit
          Agreement or any of the other Loan Documents.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Section 6. Ratification of Credit
Agreement. Except as expressly amended or modified by this Amendment, the terms and
provisions of the Credit Agreement and the other Loan Documents are ratified and confirmed
in all respects and shall continue in full force and effect.

Section 7. Expenses.  The Borrower agrees to pay on demand all expenses set forth in Section 10.3 of the Credit Agreement.

Section 8. Renewal and Continuation of Existing Loans.  Upon the effectiveness of this Amendment:

|(a) | All of the Obligations outstanding under the Credit Agreement as of the date of
          such effectiveness shall hereby be restructured, rearranged, renewed, extended
          and continued under the Credit Agreement (as amended hereby) and all Loans
          outstanding under the Credit Agreement as of the date of such effectiveness
          shall hereby become Loans outstanding under the Credit Agreement (as amended
          hereby).
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

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|(b) | In connection herewith, Banks party to the Credit Agreement prior to the
          effectiveness of this Amendment (the Existing Banks) hereby
          sell, assign, transfer and convey, and each of Compass, Wells Fargo, USBank,
          Comerica, Washington Mutual and Hibernia hereby purchases and accepts, so much
          of the aggregate Commitments under, Loans outstanding under, and participations
          in Letters of Credit issued pursuant to, the Credit Agreement such that the
          Percentage of each Bank (including the Existing Banks and each of Compass, Wells
          Fargo, USBank, Comerica, Washington Mutual and Hibernia) shall be as set forth
          on Schedule III-B to the Credit Agreement. The foregoing assignments, transfers
          and conveyances are without recourse to the Existing Banks and without any
          warranties whatsoever by any Agent, the Issuer or any Existing Bank as to title,
          enforceability, collectibility, documentation or freedom from liens or
          encumbrances, in whole or in part, other than the warranty of each Existing Bank
          that it has not previously sold, transferred, conveyed or encumbered such
          interests.
|--- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

Section 9. Miscellaneous. (a)
On and after the effectiveness of this Amendment, each reference in each Loan Document to
this Agreement, this Note, this Mortgage, this
Guaranty, this Pledge Agreement, hereunder,
hereof or words of like import, referring to such Loan Document, and each
reference in each other Loan Document to the Credit Agreement, the
Notes, the Mortgages, the Guaranty, the Pledge
Agreement, thereunder, thereof or words of like import
referring to the Credit Agreement, the Notes, or the Mortgage, the Guaranty, the Pledge
Agreement or any of them, shall mean and be a reference to such Loan Document, the Credit
Agreement, the Notes, the Mortgage, the Guaranty, the Pledge Agreement or any of them, as
amended or otherwise modified by this Amendment; (b) the execution, delivery and
effectiveness of this Amendment shall not operate as a waiver of any default of the
Borrower or any right, power or remedy of the Administrative Agent or the Banks under any
of the Loan Documents, nor constitute a waiver of any provision of any of the Loan
Documents; (c) this Amendment may be executed in any number of counterparts and by
different parties hereto in separate counterparts, each of which when so executed shall be
deemed to be an original and all of which taken together shall constitute one and the same
agreement; and (d) delivery of an executed counterpart of a signature page to this
Amendment by telecopier shall be effective as delivery of a manually executed counterpart
of this Amendment.

Section 10. Severability. Any
provisions of this Amendment held by court of competent jurisdiction to be invalid or
unenforceable shall not impair or invalidate the remainder of this Amendment and the
effect thereof shall be confined to the provisions so held to be invalid or unenforceable.

Section 11. Applicable Law.
THIS AMENDMENT AND EACH OTHER LOAN DOCUMENT DELIVERED PURSUANT HERETO SHALL EACH BE
DEEMED TO BE A CONTRACT MADE UNDER AND GOVERNED BY, AND CONSTRUED IN ACCORDANCE WITH, THE
INTERNAL LAWS OF THE STATE OF NEW YORK (WITHOUT GIVING EFFECT TO THE PRINCIPLES THEREOF
RELATING TO CONFLICT OF LAW, EXCEPT SECTION 5-1401 OF THE NEW YORK GENERAL OBLIGATIONS
LAW). This Amendment constitutes the entire understanding among the parties hereto
with respect to the subject matter hereof and supersede any prior agreements, written or
oral, with respect thereto.

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Section 12. Successors and
Assigns. This Amendment is binding upon and shall inure to the benefit of the Agents,
the Issuer, the Banks and the Borrower and their respective successors and assigns.

Section 13. Headings. The
headings, captions, and arrangements used in this Amendment are for convenience only and
shall not affect the interpretation of this Amendment.

Section 14. NO ORAL
AGREEMENTS. THIS AMENDMENT AND ALL OTHER INSTRUMENTS, DOCUMENTS AND AGREEMENTS
EXECUTED AND DELIVERED IN CONNECTION HEREWITH REPRESENT THE FINAL AGREEMENT AMONG THE
PARTIES WITH RESPECT TO THE MATTERS HEREIN CONTAINED, AND MAY NOT BE CONTRADICTED BY
EVIDENCE OF PRIOR, CONTEMPORANEOUS OR SUBSEQUENT ORAL AGREEMENTS BETWEEN THE PARTIES.
THERE ARE NO UNWRITTEN ORAL AGREEMENTS AMONG THE PARTIES.

[Signature pages follow]

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EXECUTED as of the day and
year first above written.

| | BORROWER:MAGNUM HUNTER RESOURCES, INC.By:/s/Chris Tong     Name:     Chris Tong
     Title:      Senior Vice President                    Chief Financial Officer                                           
| | ------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | ADMINISTRATIVE AGENT, COLLATERAL AGENT AND ISSUER:DEUTSCHE BANK TRUST COMPANY AMERICAS (formerly named Bankers Trust Company)
By /s/Marcus Tarkington      Name:   Marcus Tarkington     Title:     Director
| | SYNDICATION AGENT:CIBC INC.By:_____________________     Name:     Title:                                                                                                                                    

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| | DOCUMENTATION AGENT:BNP PARIBASBy:_________________________      Name:     Title:                      - and -
 By:_________________________      Name:      Title:
| | -------------------------------------------------------------------------------------------------------------------------------------------------------------------

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| | BANKS:DEUTSCHE BANK TRUST COMPANY AMERICAS(formerly named Bankers Trust Company)By:/s/Marcus Tarkington     Name:   Marcus Tarkington
       Title:     Director
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------
| | CIBC INC.By:_____________________      Name:     Title:                                                                                                         
| | BNP PARIBASBy:_____________________      Name:     Title:
                    - and -
By:_____________________       Name:      Title:                          
| | FORTIS CAPITAL CORP.By:_____________________      Name:     Title:
                     - and -
By:_____________________      Name:     Title:                  

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| | BANK OF SCOTLANDBy: ________________________       Name:       Title:            
| | ---------------------------------------------------------------------------------
| | BANK OF NOVA SCOTIABy: ________________________      Name:      Title:           
| | UNION BANK OF CALIFORNIA, N.A.By: ________________________      Name:      Title:
| | COMPASS BANKBy: ________________________      Name:      Title:                  
| | WELLS FARGO BANK TEXAS, NABy: ________________________       Name:      Title:   

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| | COMERICA BANK - TEXASBy: __________________________       Name:      Title:         
| | ------------------------------------------------------------------------------------
| | WASHINGTON MUTUAL BANK, FABy: __________________________      Name:      Title:     
| | HIBERNIA NATIONAL BANKBy: __________________________       Name:     Title:         
| | U.S. BANK NATIONAL ASSOCIATIONBy: __________________________       Name:      Title:

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ACKNOWLEDGMENT BY
GUARANTORS

Each
of the undersigned Guarantors hereby (i) consents to the terms and conditions of that
certain First Amendment to Fourth Amended and Restated Credit Agreement dated as of April
19, 2002 (the First Amendment), (ii) acknowledges and agrees that its
consent is not required for the effectiveness of the First Amendment, (iii) ratifies and
acknowledges its respective Obligations under each Loan Document to which it is a party,
and (iv) represents and warrants that (a) no Default or Event of Default has occurred and
is continuing, (b) it is in full compliance with all covenants and agreements pertaining
to it in the Loan Documents, and (c) it has reviewed a copy of the First Amendment.

Executed
as of April 19, 2002.

| | GUARANTORS:HUNTER GAS GATHERING, INC.GRUY PETROLEUM MANAGEMENT CO.MAGNUM HUNTER PRODUCTION, INC.CONMAG ENERGY CORPORATIONTRAPMAR PROPERTIES, INC. PINTAIL ENERGY, INC. PRIZE OPERATING COMPANYPEC (DELAWARE), INC.OKLAHOMA GAS PROCESSING, INC. By:  /s/Chris Tong     Name:     Chris Tong     Title:       Senior Vice President and                     Chief Financial Officer
| | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
| | PRIZE ENERGY RESOURCES, L.P.By:     Prize Operating Company,           as its general partner
By:_________________________      Name:     Senior Vice President and                     Chief Financial Officer                                                                                                                                                                   

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ATTACHMENT 1

Schedule III-B

PERCENTAGES

|Bank                                 | Percentage
|------------------------------------ | ----------
|Deutsche Bank Trust Company Americas |           
|CIBC Inc.                            |           
|BNP Paribas                          |           
|Fortis Capital Corp.                 |           
|Bank of Nova Scotia                  |           
|Bank of Scotland                     |           
|Union Bank of California, N.A        |           
|Washington Mutual Bank, FA           |           
|Wells Fargo Bank Texas, NA           |           
|Comerica Bank - Texas                |           
|Compass Bank                         |           
|U.S. Bank National Association       |           
|Hibernia National Bank               |           
|Totals                               |           

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ATTACHMENT 2

|Address for Notices:      Institution Name:     Attention:     Telephone:      Facsimile: | COMPASS BANKCompass BankDorothy Marchand24 Greenway Plaza, 14th FloorHouston, Texas  77046(713) 968-8272(713) 968-8292
|----------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------
|Domestic Office:       Telephone:       Facsimile:                                        | 24 Greenway Plaza, 14th FloorHouston, Texas  77046(713) 968-8272(713) 968-8292                                        
|LIBOR Office:       Telephone:       Facsimile:                                           | 24 Greenway Plaza, 14th FloorHouston, Texas  77046(713) 968-8272 (713) 968-8292                                       

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| | 
| | 
| | 
| | 
| | 

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|Address for Notices:       Institution Name:      Attention:       Telephone:      Facsimile: | COMERICA BANK - TEXASComerica Bank - Texas Thomas G. Rajan 1601 Elm Street Second Floor   Dallas, Texas 75201 (214) 969-6565 (214) 969-6561
|--------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------
|Domestic Office:       Telephone:      Facsimile:                                             | 1601 Elm Street  Second Floor  Dallas, Texas 75201(214) 969-6565 (214) 969-6561                                                            
|LIBOR Office:        Telephone:      Facsimile:                                               | 1601 Elm Street  Second Floor Dallas, Texas 75201(214) 969-6565(214) 969-6561                                                              

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|Address for Notices:       Institution Name:      Attention:      Telephone:       Facsimile: | WASHINGTON MUTUAL BANK, FA Washington Mutual Bank, FA Mark M. Isensee, Manager 3200 Southwest Freeway Suite 2906 Houston, Texas 77027 (713) 543-5545 (713) 543-6986
|--------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Domestic Office:       Telephone:      Facsimile:                                             | 3200 Southwest FreewaySuite 2906Houston, Texas 77027(713) 543-5545 (713) 543-6986                                                                                  
|LIBOR Office:        Telephone:      Facsimile:                                               | 3200 Southwest Freeway Suite 2906  Houston, Texas 77027 (713) 543-5545(713) 543-6986                                                                               

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|Address for Notices:      Institution Name:     Attention:     Telephone:     Facsimile: | HIBERNIA NATIONAL BANKHibernia National Bank Nancy G. Moragas  Vice President 313 Carondelet Street, 10th FloorNew Orleans, Louisiana 70130504-533-2863504-533-5434
|---------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------------
|Domestic Office:      Telephone:      Facsimile:                                         | 313 Carondelet Street, 10th Floor  New Orleans, Louisiana 70130 504-533-2863504-533-5434                                                                           
|LIBOR Office:      Telephone:       Facsimile:                                           | 313 Carondelet Street, 10th Floor  New Orleans, Louisiana 70130 504-533-2863504-533-5434                                                                           

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|Address for Notices:         Institution Name:      Attention:     Telephone:      Facsimile: | U.S. BANK NATIONAL ASSOCIATIONU.S. Bank National AssociationMatthew J. Purchase 918 17th Street CNBB0300  Denver, Colorado 80202 (303) 585-4211(303) 585-4362
|--------------------------------------------------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------------
|Domestic Office:       Telephone:        Facsimile:                                           | 918 17th StreetCNBB0300Denver, Colorado 80202(303) 585-4211(303) 585-4362                                                                                    
|LIBOR Office:        Telephone:     Facsimile:                                                | 918 17th StreetCNBB0300Denver, Colorado 80202(303) 585-4211(303) 585-4362                                                                                    

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